Flash based SSD
→Data in flash-based SSD is usually stored in memory cells on chips. In this group there are two common types of memory cells, namely MLC (Multi Level Cell) and SLC (Single Level Cell).
→SSL type SSDs are usually cheaper than those based on SLC. This is because MLC stores data by 3 bits or more per cell, whereas for SLC is only 1 bit, so the cost per gigabyte becomes lower.
→Although SSLC type SSDs are more expensive, this type has its own advantages when compared with MLC type, higher data transfer rates, lower power consumption and longer memory cell retention.
→One of the causes SLC prices is the higher manufacturing cost of each gigabyte as SLC SSD types can only store data with fewer amounts per cell.